Leather-edging machine.



F. GUMMs, DEG'D. M. UMMS, ADMINISTRATRIX.

LEATHER EDGING4 MACHINE. APPLIGATION FILED Nov, 2, 1908.

947,054. Patented Jan. 18, 1910.

UNITED STATES* PATENT OFFICE.

`lttarwramifr oUMMs; ororrroneo, immers. Aniwtrnrs'rnnrnrx or FRANK' itconfins, Dnona'snn.,

LEATHER-Enorme MACHINE.

l .Specification of Letters Eatenti Application led November, 1908.Serial No. 4602796.

VTo all whom it may concern.-

. Be 1tl known that I, MARGARET CUMMs, a citizen of the United States ofAmerica, and

a resident of Chicago, inthe countylof Cook I and State of Illinois, amthe adinunstratriX of theestate of FRANK F. CUMMs, late a citizen ofsaid city, and that the said FRANK F. @Units did invent a certain newand'useful VImprovement in `Leather Edging Machines; and I do declarethe following to be a full, clear, andeXact description of theinvention, suchy as will enable` others skilled in the art to which itappertains to make and use the same.

This invention relates to leather edging machines, and particularly tothat type which are adapted for use in edging and trimming harnessstraps and the like.

The object of the invention is to provide a device of this characterwhich will trim all four sides of the strap at one operation, and whichmay be adjusted for any size strap.

A further object of the invention is the provision of means foradjusting the movable and stationary cutting knives jointly and forindependently adjusting the mov able knives with relation to theirsupporting arms.

lVith. these and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts, as will be more fully de-r scribed and particularly pointed outin the appended claim.

In the accompanying drawings, Figure 1 is a side elevation showing oneof the `movable knives arranged in its lowermost position, and withparts of the machine shown 1n section, Fig. 2 is a rear elevation of themachine, Fig. 8 is a horizontal section, and

Fig. l is a vertical section taken on the line 4-4 of Fig. 1. j

Referring more especially to the drawings, 1 represents a suitable baseor support, which is carried upon the usual legs 2. At one edge of thebase there is provided an upstanding rib 3, and intermediate the lengthof the machine the rib is cut away to provide a recess 4, which isadapted to receive the shavings from the knife so that the operatingparts will not b eclogged. Intermediate the width of the machine andlocated at each end thereof there `is provided ribs 5, which form withthe rib 3 a channelway 6, adapted to receive the knife 'supportingmembers 7 and 8. Each of these knife supporting members is provided withlaterally extending lugs 9, upon one side thereof, which are adapted tohold the stationary knives 10. These knives 10 are substantiallySfshaped in formation, and have each right angular end thereof aperturedto receive the attaching screw 11. The lintermediate portions of theknives extend downwardly 'along side of the legs and kparalleltherewith, and are then bent inwardly toward each other as will beclearly seen from the drawings. Suitable adjusting screws '12 passthrough ythe legs and engage the inner .upper edge of the knives so thatthey,

maywbe adjusted vertically and in a rotary direction with respect to theother attaching screw 11. The opposite side of each knife supportingmember 7 or 8 is provided withl laterally extending ribs 13, which arerecessed or cut away at 141, and are provided kwith rearwardly extendingguides 15 upon which the strap travels.

At the opposite end of the knife supporting arms there is providedsuitable pivotingv pintles 16,which preferably comprise a screwbolt, andupon these pintles there is mounted the movable knife holding arms 17,normallyheld in raised position by the leaf springs 18, secured to themembers 7 and 8 by the screws lamentedaan.18,1910.v

19. At the inner end of these knife sup- 'i porting arms there areintegrally formed the transverse knife plates 20, having formed in theirfaces the dove-tailed slots 21, to receive the knives 22. A suitableset'screw 23 passes through the back of each plate 20 and secures theknife in adjusted position.

These knives extend downwardly below the l plates and are bent at'rightangles' to their Lnormal plane and then re-bent to have a downwardextension which is parallel with the normal plane. It will be seen thatwhen both, knife larms are down the strap willy be trimmed upon itsuppersideby the4 right angular portion of the movable knives 2, ,and upon itslower side edges by ythe yright angular lower ends of the knives 10.

In order to operate the arms simultaneously there is provided a pair oflinks 24, which engage apertures 25 in thearms yand pass down throughslots 26, formed in the baseon either side of the ribs 13,.and

areconnected together toa sui-table operab- `ing rod 27, which may beoperated by a foot leverory the like (not shown). f

Each knife supporting member 7 and 8 iioft thus adjusting the ymov-ableand stationary arms simultaneously while the movable arms may beadjusted vertically or independently by this movement, and thestationary knives may be adjusted vertically .rotarily with re- .spectto their pivotal Doints.

From the foregoing description, taken in `connection with theaccompanying drawings, the construction land voperation of the inventionwill be readily understood with- `out requiring a more extendedexplanation.

Various changes in the form, proportion vand the minor details of pendedclaim.

construction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention as Adefined in :theapi i Having thus described the invention, what is claimed and isdesired Letters Patent is In a device of the class described, a base, apair of knife supporting members adjustably mounted on the base, knivesadjustably mounted on said members, a pair of swinging arms pivoted tosaid knife supporting members and movable therewith, knives on said armsto coact with the knives on said members, springs carried by the membersto freely engage said arms and normally hold the same in elevatedposition, means to simultaneously depress said arms to operatingposition, and means carried by the members to support and guide thematerial to the knives.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

MARGARET CUMMS, Admz'm'stmtm' of Frank F. Oumma, de-

ceased. Witnesses:

LOUIS E. BUssInRn,

CYRUS J. Woon.

to be secured by

